U 60°N 100 hPa — Forecast Context

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FORECASTCONTEXT.COM · THE LARGE-SCALE STATE BEHIND THE FORECAST BRIEFING MOTION OUTLOOK METHODS API ☀ AUTO

FORECAST CONTEXT

DATA THROUGH 2026-10-12 · UPDATED 2026-10-13 11:02 UTC

ERA5 + GFS2.5°DAILY

BriefingStratospherePolar vortex

U60N_100

U 60°N 100 hPa

Lower-stratospheric vortex strength; governs coupling to the troposphere.